<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<style>
    body{
        margin: 0px;
    }
    #container{
        width: 100%;
        height: 950px;
        background-color: red
    }
    #container #heading{
        width: 100%;
        height: 20%;
        background-color: aqua;
    }
    #container #content_menu{
        height: 70%;
        width: 30%;
        background-color: aquamarine;
        float: left;
    }

    #container #content_body{
        height: 70%;
        width: 70%;
        float: left;
        background-color: blue;
    }

    #container #footing{
        width: 100%;
        height: 10%;
        background-color:blueviolet;
        clear: both;
    }
</style>
<body>
    
<div id="container">
    <div id="heading">1</div>
    <div id="content_menu">2</div>
    <div id="content_body">3</div>
    <div id="footing">4</div>
</div>
</body>
</html>